Mview base on a view?

I was just wondering if it is a valid practice to create a materialized vie=
w based on a view. I have some columns in a table that I want to replicate=
to another database. However, there are other columns in the table that I=
want to hide from the remote database. I am specifically concerned about =
somebody querying through my db link back to the source database. So my da=
tabase link will only be able to access a view, which hides some of the col=
umns in the table. I was browsing through the docs and didn't find this sc=
enario. I was curious if anybody else does this or if there is another met=

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